Percussion controlling mechanism of paintball guns

ABSTRACT

A percussion controlling mechanism of paintball guns includes a percussion member and an air valve separately installed in a gun body. A main air passage is located in front of and separated from the air valve by a spring. Located behind the air valve is a driving chamber having a driving member. An air sub-passage is formed under the air valve chamber for communicating with the main air passage. A driving valve is installed in a grip to correspond to the driving chamber, having an ever-opened buffering hole communicating with a front end of the driving chamber and the air sub-passage, and a driving hole communicating with a rear end of the driving chamber. By means of the air sub-passage to provoke a difference of pressure in the driving chamber, the backlash of percussion can be greatly lowered to boost speed of continuous shooting.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a paintball gun, particularly to itspercussion controlling mechanism.

2. Description of the Prior Art

As shown in FIG. 1, a conventional percussion controlling mechanism ofpaintball guns is composed of a gun body 1, a grip 2 integrally extendeddownward from a bottom of a rear end of the gun body 1, a percussionmember 3 positioned in a front end of the gun body 1, an inlet 4 formedat the rear end of the gun body 1, a driving member 5 located betweenthe percussion member 3 and the inlet 4, a spring 6 mounted around thedriving member 5, and an electromagnetic valve 7 installed inside thegrip 2 for controlling air to pass in. In firing, with theelectromagnetic valve 7, air is controlled to pass in through the inlet4 to push the driving member 5 to squeeze the spring 6 and impact thepercussion member 3. After percussion, the driving member 5 isautomatically moved back to its original position by the spring 6. Thus,with the firing operation repeatedly done, a continuous percussion canbe carried out. As described above, the conventional paintball gunmainly takes advantage of the electromagnetic valve 7 to control airpass in and out; when the pressure in the inlet 4 is larger than thepotential force of the spring 6, the driving member 5 can be pushed tosqueeze the spring 6 to impact the percussion member 3 to fire apaintball (not shown in Figures); with the elasticity of the spring 6,the driving member 5 is pushed backed to its original position. However,as there is not a buffer for relieving the elastic force rendered whilethe spring 6 stretches backward, the gun body 1 is to be forcefullyvibrated to lower its steadiness after firing. Moreover, the intervalbetween two continuous percussions can not be effectively shortenedbecause the switch of the electromagnetic valve 7 takes a long period oftime to control the inlet 4.

SUMMARY OF THE INVENTION

The object of this invention is to offer a percussion controllingmechanism of paintball guns.

The invention includes a percussion member and an air valve separatelyinstalled in a gun body. A main air passage is located in front of andseparated from the air valve by a spring. Located behind the air valveis a driving chamber provided with a driving member. An air sub-passageis formed under the air valve chamber for communicating with the mainair passage. A driving valve is installed in a grip to correspond to thedriving chamber, provided with an ever-opened buffering hole forcommunicating with a front end of the driving chamber and the airsub-passage, and a driving hole for communicating with a rear end of thedriving chamber. By means of the air sub-passage to provoke a differenceof pressure in the driving chamber, the backlash of percussion can begreatly lowered to boost speed of continuous shooting.

BRIEF DESCRIPTION OF DRAWINGS

This invention is better understood by referring to the accompanyingdrawings, wherein:

FIG. 1 is a side cross-sectional view of a percussion controllingmechanism of a conventional paintball gun;

FIG. 2 is a side cross-sectional view of a preferred embodiment of apercussion controlling mechanism of paintball guns in the presentinvention;

FIG. 3 is a side cross-sectional view of the preferred embodiment of apercussion controlling mechanism of paintball guns in the presentinvention, showing it before percussion; and

FIG. 4 is a side cross-sectional view of the preferred embodiment of apercussion controlling mechanism of paintball guns in the presentinvention, showing it after percussion.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

As shown in FIG. 2, a preferred embodiment of a percussion controllingmechanism of paintball guns is installed in a gun body 101 and a grip100 integrally extended from a bottom of a rear end of the gun body 101,composed of a percussion chamber 10, an air valve chamber 20, a drivingchamber 30, an air sub-passage 40 and a driving valve 50.

The percussion chamber 10 is located in a top portion of the gun body100, provided with a paintball outlet 11 formed at its front end, apaintball inlet 12 bored above a front top of the paintball outlet 11 tocommunicate with it for a paintball 200 to drop in, a percussion member13 installed behind the paintball inlet 12, and a percussion air passage14 formed in the percussion member 13.

The air valve chamber 20 is separately formed under the percussionchamber 10 in the gun body 100, provided with a main air passage 21formed at its front portion with an opening 211 facing downward andsealed with a pressurized bottle 300. In addition, an air valve 22 isprovided in the air valve chamber 20 and separated from the main airpassage 21 by a spring 23, mainly provided with a valve base 221, and avalve hole 222 bored in a top of the valve base 221 for corresponding tothe percussion chamber 10. Bored between the air valve chamber 20 andthe percussion chamber 10 are a through hole 24 and a driving hole 25,with the through hole 24 communicating with the valve hole 222. Anopening 223 is recessed in the valve base 221 for communicating with thevalve hole 222. And, axially and pivotally installed in the valve base221 is a valve rod 224 having its front portion correspondingly cappedby a valve cap 225 connected with the spring 23.

The driving chamber 30 is formed behind the air valve 22, provided witha driving member 31 therein, a linking block 32 mounted on a frontportion of the driving member 31 for corresponding to the air valvechamber 20, and a bolt 33 orderly inserted through the percussion member13 and the driving hole 25 and having its end section fitting in one endof the linking block 32. In addition, a driving rod 34 has its frontportion fixed with the rear end of the linking block 32 and its rearportion extended in the driving chamber 30, with a buffering gap (a)formed between its circumference and the driving chamber 30, and adriving block 35 is projectingly formed at a rear end of the driving rod34, having an outer diameter equivalent to the inner diameter of thedriving chamber 30, with a driving gap (b) formed between its rear endand the driving chamber 30.

The air sub-passage 40 is separately positioned under the air valvechamber 20, having its one end communicated with the main air passage 21and another one communicated with the driving chamber 30, so as totransmit the air in the main air passage 21 into the buffering gap (a)of the driving chamber 30.

The driving valve 50 is installed in the grip 101 next to the drivingchamber 30, provided with an ever-opened buffering hole 51 formed at oneside of its top, and a driving hole 52 located at another side of itstop. The ever-opened buffering hole 51 has its one end always opened tocommunicate with the air sub-passage 40 and another one communicatedwith the buffering gap (a), so as to let the pressurized air in the airsub-passage 40 to run into the driving chamber 30. The driving hole 52is communicated with the driving gap (b) behind the driving chamber 30for air to run through to push the driving member 31 toward the airvalve 22. And, a vent 53 is positioned at one side of a bottom of thedriving valve 50, corresponding to the ever-opened buffering hole 51.

In order to further understand the structural features, operativetechniques and expected effects of the invention, how to use theinvention is to be described below.

First, as shown in FIG. 3, through the paintball inlet 12, a paintball200 is loaded in the percussion chamber 10 in front of the percussionmember 13 in case of preparing for percussion. By the time, as the airvalve 22 is closed, the pressurized air in the main air passage 21 is toflow through the air sub-passage 40 and then, respectively flow throughthe ever-opened buffering hole 51 and the driving hole 52 to enter thebuffering gap (a) and the driving gap (b) in the driving chamber 30.

Second, as shown in FIG. 4, when firing the paintball gun, the airrunning through the driving hole 52 is larger than that running throughthe ever-opened buffering hole 51, keeping the pressure in the drivinggap (b) larger than that in the buffering gap (a), so as to push thedriving member 31 toward the air valve 22. Meanwhile, the air in thebuffering gap (a) is released to enter the air sub-passage 40 and flowback to the main air passage 21 and the air valve chamber 20. And, whilemoving the driving member 31, the bolt 33 is to be synchronously movedto orderly push forward the percussion member 13 and the paintball 200.By the time, the linking block 32 is also moved to press the valve rod224 moving forward to disclose the valve cap 225, which is tosuccessively squeeze the spring 23. When the percussion air passage 14is moved to correspond to the through hole 24, the pressurized airflowing from the main air passage 21 to the air valve chamber 20 canpass through the opening 223 to enter the valve hole 222, the throughhole 24 and the percussion passage 14 in order, so as to shoot out thepaintball 200.

After percussion, the air in the driving hole 52 of the driving valve 50is released from the vent 53. By the time, the driving hole 52 issuccessively closed to enable the pressurized air to enter the bufferinggap (a) through the ever-opened buffering hole 51, posing the pressurein the buffering gap (a) greater than that in driving gap (b) so thatthe driving member 31 is to be moved away from the air valve 22 and backto its original position. Consequently, the bolt 33 is also moved todraw the percussion member 13 back to its original position, cutting offthe communication between the percussion passage 14 and the through hole24. The air valve 224 is as well elastically forced by the spring 23 toget back to its original position while the driving member 31 is beingdrawn back to stop pushing the air valve 224, with the opening 223blocked by the valve cap 225. And, with the pressurized air entering thebuffering gap (a), it can lessen the backlash caused by the rebound ofthe spring 23 to advance operative smoothness, stepping up not only thespeed of continuous shooting but the hitting probability.

While the preferred embodiment of the invention has been describedabove, it will be recognized and understood that various modificationsmay be made therein and the appended claims are intended to cover allsuch modifications that may fall within the spirit and scope of theinvention.

1. A percussion controlling mechanism of paintball guns, said gunsrespectively including a gun body and a grip integrally extended from abottom of a rear end of said gun body, said percussion controllingmechanism comprising a percussion chamber and an air valve chamberformed separately divided in said gun body, said percussion chamberprovided with a paintball inlet bored in its top, a percussion memberinstalled behind said paintball inlet and inserted with a bolt and dugwith a percussion air passage, said air valve chamber provided with anair valve, a main air passage formed at a front portion of said airvalve chamber and separated from said air valve by a spring, an valvehole bored in a top of said air valve for corresponding to saidpercussion chamber, a driving chamber formed behind said air valve andprovided with a driving member installed inside it, a through hole and adriving hole formed between said percussion chamber and said air valvechamber and communicating to each other, said bolt inserted through saiddriving hole to position in said driving member, said percussioncontrolling mechanism characterized by; an air sub-passage separatelypositioned under said air valve chamber and having its one endcommunicated with said main air passage and another one communicatedwith said driving chamber so as to transmit air in said main air passageinto said driving chamber; and a driving valve installed in said grip tocorrespond to said driving chamber and provided with an ever-openedbuffering hole and a driving hole, said ever-opened buffering holehaving its one end communicating with a front end of said drivingchamber close to said air valve and another one communicating with saidair sub-passage so as to let said air sub-passage transfer buffering airto run into said driving chamber, said driving hole communicating withsaid driving chamber behind said driving member for air to run throughto push said driving member toward said air valve, a vent positioned atone side of a bottom of said driving valve to correspond to saidever-opened buffering hole.
 2. The percussion controlling mechanism ofpaintball guns as claimed in claim 1, wherein said air valve is providedwith a valve base, a valve hole bored in said valve base forcorresponding to said percussion chamber, an opening recessed in saidvalve base for communicating with said valve hole, a valve rod axiallyand pivotally installed in said valve base and having its front and rearportion extended in said air valve chamber, a valve cap mounted on saidvalve rod to correspond to said opening.
 3. The percussion controllingmechanism of paintball guns as claimed in claim 1, wherein said drivingchamber is provided with a linking block mounted on a front portion ofsaid driving member to correspond to said air valve chamber, said boltinserted in said linking block and said percussion member to keep themlinked with each other, a driving rod having its front portion connectedto a rear portion of said linking block and its rear portion extended insaid driving chamber so as to have a buffering gap formed between itscircumference and said driving chamber for communicating with saidever-opened buffering hole, a driving block positioned at a rear end ofsaid driving rod and having an outer diameter equivalent to an innerdiameter of said driving chamber so as to have a driving gap formedbetween its rear end and said driving chamber 30 for communicating withsaid driving hole.
 4. The percussion controlling mechanism of paintballguns as claimed in claim 1, wherein said main air passage has itsopening sealed with a pressurized bottle.